Wheel Speed Sensor Input Circuit Failure
The computer detects a problem with the wheel speed sensor circuit.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer can't get a clear signal from the wheel speed sensor, which helps determine how fast each wheel is spinning.
What the computer is actually seeing
The wheel speed sensor should send a consistent voltage signal between 0.5V and 4.5V that varies with wheel speed. If it drops to 0V or remains constant despite wheel movement, there's a malfunction.
What a healthy reading looks like
Voltage from the wheel speed sensor should vary with speed; expect a signal fluctuation corresponding to wheel RPM. Usually between 0.5V (stationary) to 4.5V (at speed).
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Inspect the wiring and connectors for the wheel speed sensor. Look for frays, breaks, or corrosion. If damaged, repair or replace as necessary.
- 22. Check the wheel speed sensor itself. Measure the resistance across the sensor terminals; it should be between 1,000 to 2,000 ohms. Replace if it’s outside this range.
- 33. With the vehicle running, use a scan tool to monitor the live data from the wheel speed sensor. Ensure the signal is fluctuating correctly. If the signal is stuck at 0V or shows no variation, replace the sensor.
- 44. Clear the code and take a test drive to see if the code returns. If it does, and you've confirmed the sensor and wiring are okay, it may indicate a problem with the ABS module.
Common causes
- Damaged wiring or connectors in the wheel speed sensor circuit
- Faulty wheel speed sensor
- Corrosion or dirt on sensor or connectors
- Misalignment or mounting issues of the sensor
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; you might experience erratic ABS behavior, but the vehicle should be drivable. Fix it soon.
Will the code come back after clearing it?
If the underlying issue isn't resolved, yes, it will often return after clearing.
Why does this code pair with ABS codes?
The wheel speed sensor feeds data to the ABS system; a failure here can directly affect ABS operations.
Working a real vehicle right now?
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